Spatial summation - Study guides, Class notes & Summaries

X-rays: Typical diagnostic wavelength and photon energy range. - Answer-100ev-200 keV min. wavelength 6pm-12nm Structure and function of the x-ray tube. - Answer-A vacuum tube with an anode and a cathode. The cathode is heated and electrons are emitted, they are accelerated by a voltage difference in the tube. When the "brake" against the material of the anode, they release their high kinetic energy in the form of an x-ray. *x-ray tubes are of very low efficiency, most of the radiation i...

Psych 115 Midterm 1 UCLA Exam Questions and Answers 100% Pass What are the three layers of protective layer called? Meninges - Dura Mater (thick outer layer) - Arachnoid (Spongy middle layer) - Pia Mater (thin inner layer) What is the organ that constantly manufactures the CSF? choroid plexus, which resides in hollow tubes and cavities called ventricles Where does the action potential originate? Integration zone (or active zone) What are the three types of neurons? Multipo...

ASU Bio 181 Quiz 4 The action potential is: - correct answer A result of the movement of ions The terminal web is a site of: - correct answer Exocytosis (T/F) Acetylcholine esterase breaks acetylcholine into muscarinic acid - correct answer False (T/F) The autonomic nervous system contains the sympathetic and the parasympathetic nervous system. - correct answer True (T/F) The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of inputs. - correct a...

BIO 252 MIDTERM REAL EXAM WITH 100% ANSWERD CORRECTLY QUESTION GUARANTEED A+ GRADE 1. When compared to a class lever system, the synovial joints of our musculoskeletal system play the role of the . o resistance o force o lever o fulcrum o weight 2. Which of the following events will occur when depolarizing graded potentials reach the membrane of the axon hillock, causing it’s membrane potential to reach threshold? o Ligand-gated Cl- channels close rapidly o Voltage-gated Na+ chan...

CBNS 124 FINAL EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+. The somatic motor system uses which type of muscle? a) Skeletal muscle b) Cardiac muscle c) Smooth muscle d) All of the above - -a) Skeletal muscle Which type of muscle is a flexor? a) Those that open the joint b) Biceps brachii c) Triceps d) Anconeus - -b) Biceps brachii Which type of skeletal muscle is important for posture and movements of the trunk? a) distal muscles b) axial muscles c) proximal muscles d) the same...

Psych 115 Midterm 1 UCLA Exam Questions and Answers 100% Pass What are the three layers of protective layer called? - Answer- Meninges - Dura Mater (thick outer layer) - Arachnoid (Spongy middle layer) - Pia Mater (thin inner layer) What is the organ that constantly manufactures the CSF? - Answer- choroid plexus, which resides in hollow tubes and cavities called ventricles Where does the action potential originate? - Answer- Integration zone (or active zone) What are the three types of ...

CBNS 124 EXAM REVIEW QUESTIONS AND ANSWERS, GRADED A+/ Transduction in the Pacinian Corpulse (2) - -Requires stretch-activated Na+ channels and produces depolarization A _ tactile stimulus will _ firing rate of action potentials in sensory nerve fiber s - - stronger , increase the labeled line code refers to - -segregation of anatomical structures in processing touch, temp, and pain signals. In addition to surround (lateral) inhibition, which of the following increases contrast enhan...

OCCTH 585 Midterm 1 Questions And Answers Rated A+. evidence for a plastic brain - correct answer.- learning and memory - skill acquisition - development - aging - injury and disease - recovery neuron - correct that allows transmission of information dendrites - correct cts/receives information from other sources cell body - correct rates incoming signals and generates outgoing signal to the axon; powerhouse of the cell axon - correct s electrical signals (action po...

Excitatory synapses cause depolarization of the post-synaptic cell. - CORRECT ANSWER-True Excitatory synapses cause hyperpolarization of post-synaptic cells. - CORRECT ANSWER-False Excitatory synapses make the post-synaptic cell less likely to fire. - CORRECT ANSWER-False Fast neurons as described in lecture are fast because they are surrounded by a type of glial cell that results in a myelin coating. - CORRECT ANSWER-False The autonomic nervous system contains the sympathetic and the pa...

Transmembrane Current correct answer: - Brain waves result from the summation of many simultaneously occurring ionic processes. - Any excitable membrane (spines, dendrites, somas, axons, and axon terminals) and any type of this can contribute to the extracellular field. Brain Waves Evolve From... correct answer: - The pop. of active cell types, each with distinct physical properties. - The interactions between neurons. - Cognitive of behavioral state of an organism. Rhythms are a Prod...